These natural parks are very important for preserving many animals, which would _______ run the risk of
becoming extinct.
| A．otherwise | B．therefore | C．nevertheless | D．however |
_—Did you visit the Summer Palace?
—No.We could have, _______we spent too much time shopping.
A.so B but C.ecause D.though
_______is often the case,he succeeded in this examination again.
| A．What | B．So | C．Which | D．As |
_ _______broken,the glass can not hold water.
| A．Once | B．After | C．On | D．Though |
_I had just started back for the house to change my clothes_______I heard voices.
| A．as | B．when | C．after | D．while |
_By success I don’t mean_______usually thought of when that word is used.
| A．what is | B．what has | C．that is | D．that has |